Evolution of Universe:

 

“Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.”

― Carl Sagan, Cosmos

OVERVIEW:-

It is the Theory for the starting of the Universe. By George Lemaitre (Based on the theory of Relativity).

I am going to explain it like I was there at that time, (this will make it more interesting).

It will be in 3 parts, (From the Bigbang till now).

I know there are so many different Theories and Some mythological theories are also there, But we will talk about this in another blog, This time let's talk about theories given by scientists like Edwin Hubbel, George Lemaitre, Carl Sagan, etc...

If you like this type of content then do comment down, and a new segment is waiting for you down there, So stay tuned.

Let's get Started...

BigBang:- 

It all started about 13.8 billion years ago, when I opened my eyes, all I saw was nothing but a dark space. At that time time did not exist and no laws of physics applied.

Suddenly there was a Big Explosion ( Also known as The Great Expansion), Which releases so much energy, and So much heat, Everything happened in a blink of an eye. 

Now let's go 1 Sec Before, to analyze deeply,

There was 1 Small Package ( known as a singularity)  with a high intensity of heat and light (It was like a zip file). 

I don't know how this happened, but the great Explosion occur (Maybe due to so much energy, mass, etc...).

As I told it happened in just a blink of an eye, so Let's break it down into smaller chunks as the events unfold...

1. At 10^-32 Seconds, this great expansion occur and time came into existence. 
2. At 10^-9 Seconds, Physics fundamental laws formed ( like gravity, EM forces, etc...).
3. At 10^-8 Seconds, Many different particles came into existence like Quarks, Leptons, etc..., due to So much energy and so much heat, the universe was expanding at a great speed, (Due to the same energy, the universe is still expanding). 
4. At 10^-6 Seconds, These Quarks start to combine with each other and start to form protons, neutrons, and electrons. Although they were not stable at that time, they were breaking and rejoining again and again.

After a Second I saw that these sub-atomic particles ( protons, neutrons, and electrons)  are start to combine and that's how atoms (the building blocks of everything) came into existence, 1st atom was of hydrogen atom ( which means hydrogen is the oldest element). 

( Due to these hydrogen atoms clouds light was not able to pass through this there was still dark space here). 

 It took millions of years to cool down the universe ( proof👇, this is the first-ever map of cosmos energy of the observable universe), but then...

ADVENT OF LIGHT:-

Millions of years went universe is still expanding at a very high speed, Its diameter is now about 100 million km, and the universe is now very cold. 

Due to high gravity hydrogen atoms are forming a perfect round shape, and this is when the 1st star of the universe came into existence (  The Methuselah Star or HD 140283  is 13.7 Billion years ago, and it is one of the oldest stars).

They give off light due to the transition of hydrogen atoms to the plasma state, It is the 1st time when I saw the light in this universe. 

GALAXY FORMATION:-

These bright round structures began to gather in a group due to high gravity and came to be known as galaxies. I still remember one of the oldest galaxies in the universe ( JADES-GS-Z13-0) which formed just after 320 million years after the Big Bang.

Around 13.61 Billion years ago, 1 more galaxy formed which a radius was 52,850 light years, it was spiral in shape, Because of the creation of this galaxy, I am now able to write blogs, and you can read them.  

It was our own Milky Way galaxy with around 4*10^11 stars in it. 

Among these Stars, there was one more star that formed 4.5 Billion years ago ( Our sun), which was surrounded by dust and cloud particles, As time passed, these dust particles started gathering and forming a more solid round structure called planets.

There was another planet in these planets whose age is 4 billion years and which is known as Earth...

CONCLUSION:-

                   जातस्य हि ध्रुवो मृत्युर्ध्रुवं जन्म मृतस्य च।

                                तस्मादपरिहार्येऽर्थे न त्वं शोचितुमर्हसि॥ २-२७

A small thing can bring big change like in this case a point (Singularity) formed a big universe.  

VIRTUAL TALENT SHOW:-

This Segment is for my blog readers to show their talents If anyone has any talent or any achievement like any art, any video, any poem, etc..., anything which can be shown virtually, Then DM me on my Instagram (gaurangchatuvedi04), I will going to post it in this segment with Orginal credits...

If you like this segment then do comment down. 

These are some Shayri (poetry) written by my blog readers, If you like them you can directly appreciate him on his Instagram id (uttamchandanipawan).    

 

 

BY Pawan Uttamchandani

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END:- 

If you like this type of content then do comment down or you can DM me your reviews on My insta ID[gaurangchaturvedi04]. 

Something personal is coming next week, so stay tuned...